Car roof structure



1946- A. FLOCONNOR 2,412,233

- GAR ROOF STRUCTURE Filed March 5, 1945 Patented Dec. 10, 1946 Ar hur. QConnqn g l -.1 ass ns t nion A e t s- & R b oarser; M rr w:-

tion or. Illinois, i

: Application March 5, 1945", Serial No.;5$1',027

.1, This invention relatesLtocar roof structure and moreparticularly-to metal roofssfor railroad cars, or the, like.

Metal railroad. car roofs. are usually constructed OJ; adjoining roof sheets spanning the side plates of the. car and connected by seams. extending across-the car. In roofsw of'this type agreat deal of difiic'ulty has been encountered in sealing the joints between adjacent roof shee-tsat the eaves portion of the roofand it: isone of the objects of the. present. invention to. provide a roof structure inwhich thejoints are tightly. sealed atthe eaves. Another object. is, to. provide a'. car. roofstruc-.

ture in which the joints betweenthe roof sheets.

at theea'ves'of the .carrare formed'by abutting the sheet edges and are sealed by yielding sealing material lying between the roof sheets and the side plates.

Still another object is to provide a car roof structure in which the edge portions of the roof sheets adjacent the joints therebetween are offset to provide a space for sealing material.

The above and other objects and advantages of the invention will be more readily apparent from the following description when read in connection with the accompanying drawing, in

which Figure 1 is a partial top plan view of a car roof structure;

Figure 2 is a partial enlarged section on the line 2-2 of Figure 1;

Figures 3 and 4 are sections on the lines 3-3 and 4-4 respectively of Figure 2;

Figure 5 is a perspective view with parts broken away showing the sealing construction at the eaves portion of the roof; and

Figure 6 is'a partial perspective view of a single roof sheet.

As shown, the car is provided at its opposite sides with side plates I of substantially 2 section supporting the side walls II of the car. At their upper edges the side plates are arcuately bent as indicated at I2 to form substantially horizontal flanges extending toward the center of the car. The roof proper is formed by a plurality of roof sheets I3 adjoining each other at their sides and spanning the side plates to be supported thereon. The roof sheets I3 are formed of sheet metal and have upwardly extending flanges I4 at their sides. When the roof sheets are assembled, the flanges I4 of adjacent sheets abut each other to form joints between the sheets. struction, as shown, the flanges I4 terminate short of the ends of the roof sheets leaving plain edge In the present con- Claims. (c1. mea er I ,2- portions which are bent extendingflang'es overlying the side plates.

The adj acent, flanges IA of the roof; sheets. are connected by means or channel shaped seam covers. I5 which-fit; over the pairs of flangesand. secure. them together. Rivets or like fastenings t6 mayrextend' through the. covers I15; and the flanges 1:4 to provide a, permanent. joint. covers. -116, formed with horizontal flange POI: tions; 'I'I; overlying. .the adjacent; portions of the roof-sheets;

Since the flanges I54 terminate shorti or the.

endsoftheroof sheets; the joints. between jacent roof sheets atgthe eaves portion of thereof is formed by the plainedges of'the sheets which may or may not be in contact. In order to seal the joint between these abutting edges, the sheets are offset adjacent their ends as indicated at I9 to provide a space between the arcuately curved portions I2 of the side plates I0 and the roof sheets. The flanges I! of the seam covers are similarly offset as indicated at 20 to fit over the offset portions I9 of the roof sheets.

The space provided by the offset portions I9 is filled with a sealing material shown at 2|. This material may be of any desired type such, for example, as paper felt or the like saturated with asphalt to provide a non-drying, yielding, waterproof mass. In assembling the roof, the sealing material 2| is placed between the ofiset portions I9 of the roof sheets and the side plates l0. When the roof sheets are riveted or otherwise fastened to the side plates by means of rivets such as I8, this material, which is initially thicker than the depth of the offset I9, is compressed to seal tightly against the roof sheets and side plates and to prevent any leakage or seepage of water between the abutting edges of the roof sheets. It will be seen that this construction can be formed and installed simply and inexpensively and that it will provide a permanent water tight joint between the roof sheet at the eaves portion of the car where the greatest diificulty has heretofore been encountered.

While one embodiment of the invention has been shown and described in detail, it will be understood that this is illustrative only and is not intended as a definition of the scope of the invention, reference being had for this purpose to v the appended claims.

What is claimed is:

1. A car roof structure comprising spaced side plates, a plurality of adjoining roof sheets spanning the side plates, the edge portions of the roof sheets being formed to fit snugly over the side over to form downwardly.

plates and being offset outwardly from the side plates adjacent the joints between adjacent sheets, and. yielding sealing material'between the side plates and said ofiset portions of the sheets to seal the joints between the heets at the eaves portion of the roof.

2. A car roof structure comprising spaced side plates, a pluralityof adjoining root'sheets span-.

ning thesid'e plates, theedge portions of the roof sheets being formed to fit snugly over the side plates and being oifset outwardly from the side plates adjacent the joints between adjacent sheets, upstanding abutting flanges at the sides v of the sheets, seam covers fitting-over the abutting flanges and extending over the edge portions of the sheets, the seam covers being ofiset to fit over the oifset portions of the sheetsnand yielding sealing material between the side plates and the offset portions of the sheets to seal the joints between the sheets at the eaves portion of the roof.---

3. Aicar roof structure comprising spaced side plates,.a p1urality of adjoining roof sheets; spanning the side plates, the edge portions of the roof sheets being formed to ffitsnugly over the side platesand. being offset? outwardly from the side plates adjacent the joints between adjacent sheets, upstanding abutting flanges at the sides of the sheets terminatingshort of the edge por-i tions thereof, channel shaped seam covers fitting over the abutting flanges having fianges thereon overlying theadjacentportions of the roof sheets, theseam' covers extending overtheedge portions of: the roof sheets and having their flanges oifset to. fit over the ofiset portions ofthe sheets, and

yielding sealing rnaterial between the side plates and the offset portions of the sheets to seal the joints between the sheets at the eaves portion of the roof.

4. A car roof structure comprising spaced side plates arcuately curved at their upper edges, a plurality of adjoining roof sheets spanning the side plateswith their edge portions curved downwardly tofit snugly over the curvededges of the side plates, the edge portions of the sheets being i ofiset outwardly adjacent. the joints between adjacent sheets, and sealing material between the side plates and the offset portions of the sheets to sealthe joints between the sheets at the eaves portion of the roof; l

5. A car roof structure comprising spaced side plates arcuatelycurved at their upper edges, a plurality of adjoining roof sheets spanning, the sideplates with their edge portions curved downwardly to fit snugly over the curved edges of the side plates, the edgeportions of the sheets being offset outwardly adjacent the jointsbetween adjacent sheets, upstanding abutting flanges at the sides of the sheets, channel shapedseam covers fitting over the abutting flanges and curved downwardly at their ends to overlie the curved edge portions of thesheets', theseam cover vhav ingi flanges overlying the adjacent portions i of the sheets and which are ofiset at the ends of the seam ,covers .to fit over. the ofiset portionsof the' sheets;,and sealing material between the side plates and the ofisetportions of the sheets to seal the jointsxbetween the sheets at the-eaves portionsofxthe' roof.

' iARTHUR F.0CONNOR". 

